Not too sure how you’re supposed to cough at someone. But I am sure this dude made the right decision in getting the fuck out of there before she summoned her army of cats down to claw his face off.
Alternatively he could have just said nothing and kept staring into the camera with those insane eyes. Just keep quiet and stare a hole in the lens and let some drool escape his mouth or something. Give her something really special to film. But it’s clear from his reaction that the guy genuinely has no clue what she’s talking about: